John Carr wrote:
Orthocladiinae. I think I see hairy wings and dorsal eye extensions. Only a few genera have that combination.

John Carr wrote:
Excluding obviously inapplicable genera, the first few couplets of the key to Orthocladiinae ask

Eyes hairy or bare? I looked at the larger pictures on Flickr and thought I saw hairs, but that branch of the key fails.

Wing hairy or bare? Looks quite hairy to me.

Now there are about 15 genera left.

Eye with no dorsal extension, wedge-shaped, or parallel sided? Looks wedge shaped in the larger size. So about 10 genera.

The photos aren't clear enough to show details like anal point present vs. absent. (The anal point is a fine extension of the tip of the last tergite.) The freshly emerged male has antenna hairs laid flat, obscuring the presence or absence of an apical seta on the antennae.

So some Orthocladiinae. It may be distinctive to an Italian expert.

John Carr wrote:
The standard reference to genera, which assumes you are armed with microscope slides, is

Wiederholm, T. 1989. Chironomidae of the Holarctic region. Keys and diagnoses. Part 3. Adult males. Entomologica Scandinavica Supplement 34.

You will also want an older guide to European midges including species descriptions. Modern works omit useful differences in color that help identify Chironominae. For example, the female of the North American Axarus has a distinctive black stripe (or three) on the thorax. A banded abdomen of a certain color shade combined with legs darkened at the knees suggests Chironomus (though some are entirely black or green). Etc.

Most Orthcladiinae are anonymous and you must use structural features from the beginning.